A 315 billion-ton ‘Loose Tooth’ breaks off Antarctica


The calved block named by scientists as the D-28 covers almost 1,636 sq km in area – the size of a small city. Interestingly, this has not been linked to climate change by the scientists but it could become a potential hazard to shipping.

The D-28 iceberg was calved off by the Amery ice shelf on September 25, 2019. The Amery ice shelf is the third largest ice shelf in Antarctica. It has an estimated floating ice area of 60,000 sq km and almost 550 km underneath the shelf is penetrated by water. The ice streams maintain equilibrium by losing these icebergs into oceans and to balance the input of snow.

The scientists had already predicted of this event in early 2000s. This section of Amery has become known as “Loose Tooth” because of its resemblance to the dentition of a small child.

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